246 ACHATINELLA LIVIDA. 



also specimens with the two bands near the periphery and 

 no other markings (fig. 21), and others without bands, white 

 above, the base more or less extensively yellow, embryo colored 

 like the typical pattern (fig. 22). 



On the Kalauao-Waimalu division ridge Messrs. Spalding 

 and Kuhns found the typical pattern, together with specimens 

 lacking dark bands, fig. 19 ; and others having several ac- 

 cessory black bands, fig. 20, coll. by Spalding. There is also 

 in Mr. Spalding 's collection a single specimen with black base 

 and a broad black band above the periphery. Also a few 

 others having a small black basal area. 



Very few specimens from any locality lack the brown or 

 ochraceous zone at the summit ; probably all young shells show 

 it, though on rare adults it may disappear by fading. 



A. juddii is rather difficult to place in the series, as it has 

 affinities with casta, papyracea and livida, and seems more 

 related to the last two, though its habitat lies between the 

 areas of ~bellula and casta. 



24. A. LIVIDA Swainson. PL 53, figs. 1 to 9. 



1 1 Shell reversed, ovate, obtuse, livid brown or greyish ; 

 spire thickened ; suture with a deep fulvous line. A small 

 reversed species, unbanded, and scarcely exceeding half an 

 inch in length. In form it perfectly resembles the green 

 variety of Bulimus citrinus. The three specimens in our 

 museum vary in color from a light olive brown to a livid 

 purple which lies in longitudinal shades, and gradually 

 changes on the spiral whorls to white. Suture marked by a 

 line of deep orange brown. Aperture white, tinged with 

 purple' (Swainson). 



Oahu : Wahiawa to Kawailoa district. 



Achatinella livida SWAINS., Quarterly Journal of Science, 

 Literature and the Arts, iii, 1828, p. 8.5; Zoological Illustra- 

 tions iii, p. 108, pi. 108, f . 2. Eburnella livida Swains., Hart- 

 man, Proc. A. N. S. Phila., 1888, p. 36. Achatinella viridans 

 Mighels, REEVE, Conch. Icon. pi. 4, f. 25 (not A. viridans 

 Mighels) =A. reevei C. B. ADAMS, Ann. Lye. N. H. of N. Y. 

 v, p. 44; Contributions to Conchology No. 8, p. 128 (1850).- 



